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DSLR lense length corolation to 35mm lenses

Want to add a Nikon D80 DSLR to my 35mm film SLRs & still use existing F-mount AF lenses. Makers like Canon & Nikon offer same lenses for both their film & DSLR's so they list the true 35mm format focal lengths. What is the focal length conversion for a given 35mm format lense to its digital equivalent and even though the existing lenses have a specific angle of view, is this angle affected when you use the same lense on a DSLR?

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DSLR lenses

In reply to: DSLR lense length corolation to 35mm lenses

All DSLR lenses are marked as to the 35mm film focal length.

A lens marked 24-85mm - f3.5-4.5

when used on a Nikon DSLR:

The Nikon DSLR will see the lens as being 36-127.5mm - f3.5-4.5

You use a multiplier of 1.5


50 mm is usually considered a normal or neutral focal length.
(neither wide angle, nor telephoto).

So the lens that had a pretty good wide angle (24mm) on a 35mm film camera will have less of a wide angle (36mm) on the DSLR camera.


On a Canon DSLR you use a multiplier of 1.6
On a Olympus or Panasonic DSLR you use a multiplier of 2.0


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Nikon D80 is pretty nice

In reply to: DSLR lense length corolation to 35mm lenses

I have several Canon cameras and lenses, and I am considering the Nikon D80 purchase as an experiment - if I like it, I will sell my Canon equipment and switch over to all Nikon equipment. I highly recommend the D80.

Regarding the lens conversion factor, the previous post is correct - the conversion factor for the D80 is 1.5, and it does represent a change in the angle of view, focus length, and frame of the image.

I have purchased the "digital only" lenses, and will never do so again. In fact, my experiences are such that I will stick with factory lenses, whether I stay a Canon customer or switch to Nikon. The resulting quality of output is worth the financial investment.

-Woody Fairley

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It depends.

In reply to: DSLR lense length corolation to 35mm lenses

whether you choose Nikon or Canon. From what I remember Nikon only offer 1.5 multiplier whether it's D2X, D200, or D40-80. ( for example, 35 mm lense becomes 52.5 lense on Nikon DSLR ). Meanwhile, Canon offers 3 levels of multiplier. Canon 5D and 1Ds Mark II hold the same equivalent as the normal SLR camera ( standard 35 mm ). Canon 1 DMark II and Mark IIN offer 1.3 multiplier ( 35 mm lense becomes 45.5 mm lense ). And lastly, Canon 20D, 30D, 350D, and 400D hold 1.6 multiplier.

What I saw on the full-frame DSLR shootings, the soft-edge lighting picture occurs at the depth of field ( below F-5 ). I tested on my EOS 5D and friend's 1Ds Mark II, especially with most zoom lenses. But, it seems to improve a bit when using fix-focal lenses.

In fact, the camera with the multiplier seems to perform better regard the matter, but you'll need some good wide-angle lense since it'll be harder to go wider.

So, you be the judge whether what to choose. Good luck

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